Core 2 Duo T5870 vs Core i7-940XM

Primary details

Comparing Core i7-940XM and Core 2 Duo T5870 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2213	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	Intel Core 2 Duo
Power efficiency	2.40	no data
Architecture codename	Clarksfield (2009−2010)	Merom (2006−2008)
Release date	20 June 2010 (14 years ago)	1 October 2008 (16 years ago)
Launch price (MSRP)	$1,096	no data

Detailed specifications

Core i7-940XM and Core 2 Duo T5870 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	4 (Quad-Core)	2 (Dual-core)
Threads	8	2
Base clock speed	2.13 GHz	2 GHz
Boost clock speed	3.33 GHz	2 GHz
Bus rate	2500 MHz	800 MHz
L1 cache	64 KB (per core)	no data
L2 cache	256 KB (per core)	2 MB
L3 cache	8 MB (shared)	2 MB L2 Cache
Chip lithography	45 nm	65 nm
Die size	296 mm2	143 mm2
Maximum core temperature	100 °C	100 °C
Number of transistors	774 million	291 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-
VID voltage range	no data	1.075V-1.175V

Compatibility

Information on Core i7-940XM and Core 2 Duo T5870 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	no data
Socket	FCPGA988,PGA988	no data
Power consumption (TDP)	55 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-940XM and Core 2 Duo T5870. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	+	-
Hyper-Threading Technology	+	-
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	-	-
PAE	36 Bit	no data
FSB parity	no data	-

Security technologies

Core i7-940XM and Core 2 Duo T5870 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-940XM and Core 2 Duo T5870 are enumerated here.

VT-d	+	no data
VT-x	+	-
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-940XM and Core 2 Duo T5870. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-1066, DDR3-1333	no data
Maximum memory size	8 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

None

no data

Peripherals

Specifications and connection of peripherals supported by Core i7-940XM and Core 2 Duo T5870.

PCIe version	2	no data
PCI Express lanes	16	no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Pros & cons summary

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Recency	20 June 2010	1 October 2008
Physical cores	4	2
Threads	8	2
Chip lithography	45 nm	65 nm
Power consumption (TDP)	55 Watt	35 Watt

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Should you still have questions on choice between Core i7-940XM and Core 2 Duo T5870, ask them in Comments section, and we shall answer.

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